Lotus Bleu on Verdun Av at the corner of 4th Av is amazing. Their lamb noodle soup is huge and absolutely amazing, think it's $6.50, and it can easily feed two. While you're at it you could split an order of dumplings (20 to a plate) for $5. I've been there many times, very easy to eat for under $10 especially if you're with a couple of people.